A Manual of the Grasshoppers of New Mexico

Trachyrhachys aspera (Scudder)


Adult male (from Dr. Pfadt's Field Guide)

New Mexico Distributions Map

Common name: Finned Grasshopper.

Size: 16-27 mm.

General distribution: Wyoming, S. to central Mexico.

Distribution in New Mexico: Bernalillo, Catron, Colfax, Curry, De Baca, Grant, Guadalupe, Harding, Hidalgo, Lincoln, Mora, Otero, Quay, San Miguel, Santa Fe, Socorro, Taos, Torrance, Union.

Habitat: Cool grasslands.

Host: Grasses, especially blue grama.

Adults Present: August-October.

Notes: Genus lacks spoon-shaped cerci of Metator. Trachyrhachys differs from Hippopedon in having lateral carina, not white lines on metazona; hind femora wider and without medial, oblique dark band; middle lobe of pronotal crest distinct ridge like. T. aspera differs from other members of the genus by having tegmina with at most three dark markings, by having hind tibiae black at distal end and in having peripheral band on hind wings if present. Not economically important.

Reference: Otte 1984.

T. aspera fact sheet from the Field Guide to Common Western Grasshoppers

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